จับคู่ลูกค้ากับคำสั่งซื้อ

อินพุต:
std::vector<std::vector<long long>> orders = {
    {1, 50},
    {2, 30},
    {1, 20}
};
std::vector<long long> customer_ids = {1, 2, 3};
std::vector<std::string> customer_names = {"Ada", "Lin", "Bo"};

ผลลัพธ์ที่คาดหวัง:
std::vector<std::string> expected = {"Ada:70", "Lin:30"};

อินพุต:
long[][] orders = new long[][] {
    new long[] {1, 50},
    new long[] {2, 30},
    new long[] {1, 20}
};
long[] customer_ids = new long[] {1, 2, 3};
string[] customer_names = new string[] {"Ada", "Lin", "Bo"};

ผลลัพธ์ที่คาดหวัง:
string[] expected = new string[] {"Ada:70", "Lin:30"};

อินพุต:
std::vector<std::vector<long long>> orders = {
    {8, 40},
    {7, 40},
    {9, 99}
};
std::vector<long long> customer_ids = {7, 8};
std::vector<std::string> customer_names = {"Zoe", "Max"};

ผลลัพธ์ที่คาดหวัง:
std::vector<std::string> expected = {"Max:40", "Zoe:40"};

อินพุต:
long[][] orders = new long[][] {
    new long[] {8, 40},
    new long[] {7, 40},
    new long[] {9, 99}
};
long[] customer_ids = new long[] {7, 8};
string[] customer_names = new string[] {"Zoe", "Max"};

ผลลัพธ์ที่คาดหวัง:
string[] expected = new string[] {"Max:40", "Zoe:40"};